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Expansion monomer modified light-cured resin and preparation method thereof

A technology of light-curing resin and expanding monomer, which is applied in the field of expanding monomer-modified light-curing resin and its preparation, and can solve the problems of curing volume shrinkage and the like

Active Publication Date: 2020-01-21
点铂医疗科技(常州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this hybrid photocurable resin still has the problem of curing volume shrinkage, regardless of the traditional casting molding or extrusion molding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of expanded monomer: Weigh 55g of trimethylolpropane monoallyl ether, add it to 800 mL of toluene, heat it to 110°C with magnetic stirring, reflux to separate water, add 1 g of p-toluenesulfonic acid, add 31 mL of tetraethyl orthocarbonate After reacting for 24 h, the reaction temperature was lowered to room temperature, the product was concentrated under reduced pressure, and separated and purified by column chromatography (ethyl acetate:petroleum ether=1:30) to obtain the expanded monomer, which was set aside.

[0034]Preparation of nanoparticles: Weigh 10 g of silicon γ-methacryloxypropyltrimethoxysilane and 30 g of talcum powder; add the nanoparticles into the reaction kettle, and add the silane coupling agent while stirring, Stir at a constant speed for 1-2 hours and set aside.

[0035] Preparation of photocurable resin: Weigh 23g of methyl methacrylate, 36g of butyl acrylate, 41g of glycidyl ether epoxy resin, 8g of expansion monomer, and 40g of nanopa...

Embodiment 2

[0037] Preparation of expanded monomer: Weigh 25g of allylpropane-1,3-diol, add it to 650 mL of toluene, heat it to 100°C with magnetic stirring, reflux to separate water, add 0.65 g of p-toluenesulfonic acid, add 43 mL of tetracarbonate Propyl ester was reacted for 24 h and then lowered to room temperature. The product was concentrated under reduced pressure, separated and purified by column chromatography (ethyl acetate:petroleum ether=1:30) to obtain the expanded monomer, and set aside.

[0038] Preparation of nanoparticles: Weigh 10g of silicon γ-methacryloxypropyltrimethoxysilane, 5g of 3-methacryloxypropylmethyldiethoxysilane, 20g of talc powder and 40g of mica powder Add the nanoparticles into the reaction kettle, and add the silane coupling agent while stirring, and stir at a constant speed for 1-2 hours, and set aside.

[0039] Preparation of photocurable resin: Weigh 33g methyl acrylate, 13g 2-acrylic acid-2-hydroxy-3-phenoxypropyl ester, 57g glycidyl ester epoxy res...

Embodiment 3

[0041] Preparation of expanded monomer: Add 12.3g of 6,8-dihydroxy-1-orene into 600 mL of toluene, heat to 110°C with magnetic stirring, reflux to separate water, add 0.98 g of p-toluenesulfonic acid, add 6.2 mL of orthocarbonic acid Tetraethyl ester was reacted for 20 h and then lowered to room temperature. The product was concentrated under reduced pressure, separated and purified by column chromatography (ethyl acetate:petroleum ether=1:30) to obtain the expanded monomer, which was set aside.

[0042] Preparation of nanoparticles: Weigh 5g of silicon γ-methacryloxypropyltrimethoxysilane, 5g of allyltriethoxysilane, 20g of talcum powder and 40g of fumed silica; add the nanoparticles into the reaction kettle In the state of stirring, add the silane coupling agent while stirring, stir at a constant speed for 1-2 hours, and set aside.

[0043] Preparation of photocurable resin: Weigh 13g methyl acrylate, 17g hydroxybutyl acrylate, 16g hydroxyethyl methacrylate, 51g glycidyl est...

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Abstract

The invention discloses expansion monomer modified light-cured resin and a preparation method thereof, and aims to provide the expansion monomer modified light-cured resin and the preparation method thereof. The light-cured resin plays a very critical role in a light-cured rapid prototyping technology (SLA), the prototyping technology has the characteristics of low energy consumption, low cost, high prototyping precision and the like, and promotes the huge change of the manufacturing field. In the prior art, light-cured resin has the problem of volume shrinkage in the curing process, so that aformed product is large in shrinkage warping, low in precision and poor in mechanical property, and the performance of a final finished product is influenced. According to the invention, an expansionmonomer is introduced into a resin curing system; therefore, the volume shrinkage of the photo-cured resin during polymerization is counteracted by utilizing the polymerization expansion characteristic of the photo-cured resin, so that the prepared photo-cured composite resin has low shrinkage characteristic, good physical and chemical properties and thermodynamic properties, can be molded by adopting direct photo-curing rapid molding, 3D printing molding and the like, and has a wide application prospect.

Description

technical field [0001] The invention relates to the field of macromolecule photocurable resins, in particular to an expansion monomer-modified photocurable resin and a preparation method thereof. Background technique [0002] In the late 1970s, the United States proposed the concept of rapid prototyping, that is, the idea of ​​using continuous layer selection solidification to produce three-dimensional solids. Among rapid prototyping technologies, light-curing rapid prototyping technology has the most in-depth research, rapid development, and wide application. It is also the most mature rapid prototyping technology at present. After more than 30 years of development, light-curing rapid prototyping technology has achieved long-term development, and there are more and more companies and institutions engaged in research on rapid light-curing prototyping methods, such as 3D Systems, EOC, and CMET. At present, the application of laser scanning has increased the molding speed b...

Claims

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Application Information

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IPC IPC(8): C08F283/10C08F220/18C08F220/14C08F220/20C08F283/06C08F218/00C08K9/06C08K3/34C08K7/26
CPCC08F283/10C08F283/065C08K9/06C08K3/34C08K7/26C08K2201/011C08K2201/014C08F220/14C08F220/20
Inventor 李燕燕张良俊徐州李敏
Owner 点铂医疗科技(常州)有限公司
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